gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / gdb / auxv.h

diff --git a/gdb/auxv.h b/gdb/auxv.h
index 73c17d5f68c909531ac74fcc57ff04b44f3100b3..9525801e37dbfda7e452178129ab96830cfb2a9c 100644 (file)
--- a/gdb/auxv.h
+++ b/gdb/auxv.h
@@ -1,6 +1,6 @@
 /* Auxiliary vector support for GDB, the GNU debugger.
 
-   Copyright (C) 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+   Copyright (C) 2004-2020 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -20,21 +20,37 @@
 #ifndef AUXV_H
 #define AUXV_H
 
+#include "target.h"
+
 /* See "include/elf/common.h" for the definition of valid AT_* values.  */
 
+/* The default implementation of to_auxv_parse, used by the target
+   stack.
 
-/* Avoid miscellaneous includes in this file, so that it can be
-   included by nm-*.h for the procfs_xfer_auxv decl if that is
-   used in NATIVE_XFER_AUXV.  */
-struct target_ops;             /* Forward declaration.  */
+   Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
+   Return 0 if *READPTR is already at the end of the buffer.
+   Return -1 if there is insufficient buffer for a whole entry.
+   Return 1 if an entry was read into *TYPEP and *VALP.  */
+extern int default_auxv_parse (struct target_ops *ops, gdb_byte **readptr,
+                              gdb_byte *endptr, CORE_ADDR *typep,
+                              CORE_ADDR *valp);
 
+/* The SVR4 psABI implementation of to_auxv_parse, that uses an int to
+   store the type rather than long as assumed by the default parser.
+
+   Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
+   Return 0 if *READPTR is already at the end of the buffer.
+   Return -1 if there is insufficient buffer for a whole entry.
+   Return 1 if an entry was read into *TYPEP and *VALP.  */
+extern int svr4_auxv_parse (struct gdbarch *gdbarch, gdb_byte **readptr,
+                           gdb_byte *endptr, CORE_ADDR *typep,
+                           CORE_ADDR *valp);
 
 /* Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
    Return 0 if *READPTR is already at the end of the buffer.
    Return -1 if there is insufficient buffer for a whole entry.
    Return 1 if an entry was read into *TYPEP and *VALP.  */
-extern int target_auxv_parse (struct target_ops *ops,
-                             gdb_byte **readptr, gdb_byte *endptr,
+extern int target_auxv_parse (gdb_byte **readptr, gdb_byte *endptr,
                              CORE_ADDR *typep, CORE_ADDR *valp);
 
 /* Extract the auxiliary vector entry with a_type matching MATCH.
@@ -44,24 +60,24 @@ extern int target_auxv_parse (struct target_ops *ops,
 extern int target_auxv_search (struct target_ops *ops,
                               CORE_ADDR match, CORE_ADDR *valp);
 
-/* Print the contents of the target's AUXV on the specified file. */
-extern int fprint_target_auxv (struct ui_file *file, struct target_ops *ops);
+/* Print a description of a single AUXV entry on the specified file.  */
+enum auxv_format { AUXV_FORMAT_DEC, AUXV_FORMAT_HEX, AUXV_FORMAT_STR };
+
+extern void fprint_auxv_entry (struct ui_file *file, const char *name,
+                              const char *description,
+                              enum auxv_format format, CORE_ADDR type,
+                              CORE_ADDR val);
 
+/* The default implementation of gdbarch_print_auxv_entry.  */
+
+extern void default_print_auxv_entry (struct gdbarch *gdbarch,
+                                     struct ui_file *file, CORE_ADDR type,
+                                     CORE_ADDR val);
+
+/* Print the contents of the target's AUXV on the specified file.  */
+extern int fprint_target_auxv (struct ui_file *file, struct target_ops *ops);
 
-/* This function is called like a to_xfer_partial hook,
-   but must be called with TARGET_OBJECT_AUXV.
-   It handles access via /proc/PID/auxv, which is the common method.
-   This function is appropriate for doing:
-          #define NATIVE_XFER_AUXV     procfs_xfer_auxv
-   for a native target that uses inftarg.c's child_xfer_partial hook.  */
-
-extern LONGEST procfs_xfer_auxv (struct target_ops *ops,
-                                int /* enum target_object */ object,
-                                const char *annex,
-                                gdb_byte *readbuf,
-                                const gdb_byte *writebuf,
-                                ULONGEST offset,
-                                LONGEST len);
+extern target_xfer_partial_ftype memory_xfer_auxv;
 
 
 #endif